JPS59144978U

JPS59144978U - projection television

Info

Publication number: JPS59144978U
Application number: JP3828383U
Authority: JP
Inventors: 伸一長谷川
Original assignee: パイオニア株式会社
Priority date: 1983-03-18
Filing date: 1983-03-18
Publication date: 1984-09-27

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図〜第３図は従来の投写形テレビジョンの断面図、
第４図は本考案の一実施例を示す断面図、第５図は偏向
フレンネルレンズの拡大側面図、第６図〜第・７図はミ
ラー内蔵レンズの他の実施例を示す断面図、第８図はミ
ラー内蔵レンズにより占有スペースが削減できることを
説明する説明図である。１・・・投写管、７・・・キャビネット、１１・・・ス
クリ、−ン、１６．１７・・・ミラー、１Ｂ・・・ミラ
ー内蔵レンズ。Figures 1 to 3 are cross-sectional views of conventional projection televisions;
FIG. 4 is a sectional view showing one embodiment of the present invention, FIG. 5 is an enlarged side view of a deflection Fresnel lens, and FIGS. 6 to 7 are sectional views showing other embodiments of a lens with a built-in mirror. FIG. 8 is an explanatory diagram illustrating that the occupied space can be reduced by a lens with a built-in mirror. 1...Projection tube, 7...Cabinet, 11...Screen, 16.17...Mirror, 1B...Lens with built-in mirror.

Claims

[Scope of utility model registration request]

In a projection television in which an image from a projection tube is magnified by a lens system and formed on a screen, the lens system allows the optical axis of the output from the projection tube to be approximately 18 mm with respect to the optical axis of the input.
0", and the incident optical axis of the screen is deflected in the normal direction of the screen and exits."
A projection television characterized in that the optical path between the lens system and the screen is equipped with a mirror to bend the optical path so that the bent optical path becomes threefold.